Patents by Inventor David F. Odendaal

David F. Odendaal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Underground rock chutes
    Patent number: 4371289
    Abstract: A rock pass bored in rock is lined with cylinders 10 which are stacked one on top of the other. The liners are lined in those parts which are subject to wear with detachable liners 15. The remainder carries rails 14 as a protection against rebound.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: February 1, 1983
    Assignee: Gold Fields Mining and Development Limited
    Inventor: David F. Odendaal